Lenovo 20RL Manuals

Manuals and User Guides for Lenovo 20RL. We have 1 Lenovo 20RL manual available for free PDF download: Hardware Maintenance Manual

Lenovo 20RL Hardware Maintenance Manual

Lenovo 20RL Hardware Maintenance Manual (75 pages)

Brand: Lenovo | Category: Laptop | Size: 24.04 MB

Table of Contents

Table of Contents
3
About this Manual

5
Chapter 1. Safety Information

7
Chapter 2. Important Service Information

27
- Strategy for Replacing Frus
  27
  - Important Notice for Replacing a System Board
    27
  - How to Use Error Message
    28
- Strategy for Replacing Frus for CTO, Special Bid Model, and Standard Models
  28
  - Product Definition
    28
  - FRU Identification
    28
Chapter 3. General Checkout

29
- What to Do First
  29
- Checkout Guide
  30
  - Diagnosing Problems
    30
  - Quick Test Programs
    30
  - UEFI Diagnostic Program
    31
  - Bootable Diagnostic Programs
    31
- Power System Checkout
  32
  - Checking the Ac Power Adapter
    32
  - Checking the Built-In Battery and Operational Charging
    33
Chapter 4. Related Service Information

35
- Windows Recovery Apps
  35
- Lenovo Factory Recovery USB Key
  36
- Using Passwords
  36
- Symptom-To-FRU Index
  37
  - Numeric Error Codes
    38
  - Intermittent Problems
    38
  - Undetermined Problems
    39
Chapter 5. Locations

41
- Overview
  41
- Locating Frus and Crus
  41
  - Major Frus and Crus
    42
  - Other Parts
    44
- Looking up FRU Information
  44
Chapter 6. FRU Replacement Notices

45
- Service Tool Kit
  45
- Screw Notices
  45
- Retaining Serial Numbers
  46
Chapter 7. Removing or Replacing a FRU

47
Appendix A. Notices

69
Appendix B. Abbreviation and Acronym Table

71

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